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ImTranslator provides translation powered by Google Translate, Microsoft, Babylon for 70+ languages. It includes Translator, Dictionary, Text-to-Speech, Back Translation.
Video Tutorial: http://youtu.be/qyLyFkQuMGU
Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies...
Notifier for gmail, yahoo, hotmail, aol and more webmails.
X-notifier(aka WebMail Notifier) checks your webmail accounts and notifies the number of unread emails...
Supports : gmail, yahoo, hotmail, POP3/IMAP, facebook, twitter and more
The extension previously known as GooglePreview. Inserts preview images (thumbnails) and popularity ranks of web sites into the Google, Yahoo, Bing and DuckDuckGo search results pages.
TinEye is a reverse image search engine. The plugin adds a context menu item that allows you to search for an image to find out where it came from, how it is being used, if modified versions of the image exist, or to find higher resolution versions.
Shows a full size image when you hover over thumbnails on popular websites like Facebook, Twitter or Amazon.
Get international weather forecasts from AccuWeather.com and display them in any toolbar or statusbar with this highly customizable and unobtrusive extension.
A complete redesign of popular Google services, Google Redesigned changes the appearance of popular Google services.
Hides the bookmark toolbar until you move the mouse above it.
JumpStart your web experience.
When you open a new tab get immediate access to your most frequently used sites, bookmarks, closed tabs, history search. Similar to Google's Chrome new tab feature.
Note from Mozilla: This add-on has been discontinued. Try Colorlicious instead.
Change Firefox to Any Color and create your own personalized theme.
Collections are groups of related add-ons that anyone can create and share.Explore Collections